selector valve problem

[J_J]

JJ...there is no electrical power to the valve. i had the local hydraulic shop cut the two hose and put new jic 8 ends on the hose. i added the electric selector valve there. so, all hose is the same. the dump/curl input hose are on one side and the 4 outputs are on the other. two original hose (shortened) from selector valve to the cyl. there are no hose on what will be the grapple circuit. the restriction is the selector valve. i checked the hose and cant see any problem with them. i thought the hydraulic shop may have skived some of the hose liner.....al

My take on that valve is this.

The description of the valve states that one of the valves is normally open, and the other is normally closed, That tells me that if the hoses are hooked up correctly, the curl will function as normal, and the grapple is blocked off in the no voltage state. Now when you take a SPST switch and apply 12v, to both valves, both solenoids will switch to the opposite state. Thats why a SPST switch is used for both valves.

 

[tommu56]

JJ
The schematic clearly shows 2 normally closed valves, no flow unless a coil is energized.
So nothing will happen when the lever is moved with out energizing the coil.


jurden
Try temporarily powering the valve you have connected to the curl cylinder, and move lever that function will work correctly.

tom

 

[J_J]

There are several ways to hook up this valve. Now if the statement is true about one valve is normally open, and the other is normally closed, Then an SPST switch will cause the valve to divert the fluid to the other cylinder, by causing the solenoids to activate and switch to the opposite mode.

The normally open solenoid is in the circuit going to the curl cylinder, and the normally closed circuit is going to the grapple. So when voltage is applied to both valves, the circuit fluid is switched to the other cylinder.

 

[J_J]

A simple test would be to apply air to the input, and see which cylinder ports have air, and then apply 12 v and see if the air flow is switched.



9-5117, and 9-5117A are two different valves.

The schematic for the 9-5117 valve is for two normally closed valves. The 9-5117A one circuit is open, and the other is closed. So the circuit will flip flop every time you apply power to the solenoid.

A single momentary push button will power this valve 9-5117A and switch circuits on command.

 

[tommu56]

A simple test would be to apply air to the input, and see which cylinder ports have air, and then apply 12 v and see if the air flow is switched.



9-5117, and 9-5117A are two different valves.

The schematic for the 9117 valve is for two normally closed valves. The 9-5117A one circuit is open, and the other is closed. So the circuit will flip flop every time you apply power to the solenoid.

A single momentary push button will power this valve 9-5117A and switch circuits on command.

jurden Which one do you have?

I cant find the schematic for the "9-5117a"
The the link kennyd provided to "9-5117" shows NC valves.


tom

 

[tommu56]

I found the "A" valve schematics it is a normally open valve

we just need to know which one jurden has.

https://www.surpluscenter.com/Drawing/DR9-5117-a.pdf

tom

 

[jurden]

I have the A valve. one NO and one NC. When power is applied to both solenoids the valve is supposed to open the other side and close the normally open side. i used air to test the opperation of the valve before i installed it. I wasnt sure so i used air and powered up the valve. with air it worked like the directions supplied. just not enough oil passes and caused the relief valve to open and the engine to load up. dump/curl work, just much slower than before i added the valve.....al
thanks for all the input guys

 

[kennyd]

jurden Which one do you have?

I cant find the schematic for the "9-5117a"
The the link kennyd provided to "9-5117" shows NC valves.


tom

I confused things by posting that...I am sorry. He has the "A" valve as he stated...I posted the link for the port identification and I should have clarified that when the did it...My bad.

 

[J_J]

I think I would make sure that the solenoids are grounded good, ;and that you have 12 v going to the solenoid when you press the switch. Low voltage caused by a bad ground will not allow the full 12 v to flow, and the solenoid may not pull or push all the way. However the open circuit should have full curl on the bucket, because the valve is open with no voltage. To test that one circuit, use a hose off the push line from the cylinder, and put in a bucket and notice flow, when you push the FEL lever to curl. Even though the valve does say 15 GPM, that should be more than enough to operate that cylinder rather fast.

 

[jurden]

i have the selector valve off the tractor. im going to put the hose back together where i had the valve with two jic/jic male adapters and see if it works normal. JJ---i dont think i could tell how many gph i would be getting past the valve. i dont know what 5 or 10 gph would look like. at least this way it takes the valve out of the picture. i will advise and thanks for all the input guys...really!.....al